Sports & Fitness — entry 034 of 34

Wger

Verified Jul 2026

Wger is an open-source workout, nutrition, and body-metrics tracker whose public REST API exposes its exercise/equipment/muscle database with no authentication at all, while personal-data endpoints (workouts, nutrition logs, body weight) require a per-account token generated from your profile. It's free -- the hosted instance at wger.de doubles as the reference deployment for the AGPL-licensed, self-hostable project -- and CORS is wide open on the public API.

fitnessworkoutsopen-sourceself-hostednutrition
AuthenticationAPI KeySign up with the provider to obtain credentials.
HTTPSSupportedTraffic is encrypted in transit.
CORSEnabledCallable directly from browser JavaScript.
PricingFreeNo paid tier — free for the documented use case.
FormatsJSONResponses can be requested as JSON.

GreatAPIs Score

Score78out of 100
Authentication15/25API key required
Pricing20/20Free to use
Docs14/20Documentation URL provided
Formats9/15Single response format
Freshness20/20Verified within 6 months

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Scored 78 on greatapis.com
<a href="https://greatapis.com/api/wger/"><img src="https://greatapis.com/badge/wger.svg" alt="Scored 78 on greatapis.com"></a>

Auth quickstart

  1. Sign up with the provider to get an API key.
  2. Send it on every request as a headerAuthorization: <key>
  3. The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Stored keyNo key stored

Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.